CODEWITHSUNDEEP
androidandroid-asynctaskandroid-scrollviewautoscroll
Zankhna
Zankhna

Reputation: 4563

Automatic Scroll Text Within TextView Android

I am creating application which is having textview with lots of text and want to perform automatic vertical scrolling till the text ends. But i am not getting the way to perform automatic scroll.

I have reffred https://github.com/blessenm/SlideshowDemo project. But could not get success with this code..

Here is my XML Code :

<?xml version="1.0" encoding="utf-8"?>
<ScrollView 
 xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/vertical_scrollview_id"
android:layout_width="wrap_content"
android:layout_height="0dip"
android:layout_weight="1.0"   
android:fadingEdge="none"
android:scrollbars="none"
 >

<LinearLayout
    android:id="@+id/vertical_outer_layout_id"
    android:layout_width="fill_parent"
    android:layout_height="350dp"
    android:orientation="vertical"
    android:layout_marginTop="67dp"
    android:paddingBottom="100dp"
   >


    <TextView
        android:id="@+id/lyricView"
        android:layout_width="fill_parent"
        android:layout_height="250dp"
        android:layout_marginTop="67dp"
        android:background="#000000"
        android:gravity="center"
        android:maxLines="16"
        android:paddingBottom="5dp"
        android:paddingTop="8dp"            
        android:textColor="#ffffff"
        android:textStyle="bold"
        android:width="200dp" />

    <ProgressBar
        android:id="@+id/showLoading"
        style="?android:attr/progressBarStyle"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:layout_marginTop="-150dp"
        android:background="#000000" />
</LinearLayout>   
</ScrollView>

Pleaze give me some idea. Thanx in advance. My simple scrolling functionality works well. But i want to perform automatic vertical scroll..

Upvotes: 0

Views: 1008

Answers (2)

Kanth
Kanth

Reputation: 6751

When you have content that fits your screen which doesn't need scrollview, it doesn't appear. But when your content exceeds the screen, then the scrollview comes into picture. You have to change the height attribute of textview to wrap_content to make it automatically increase its height as per content.

Try this:

<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:background="#e6e6fa"
    android:padding="5dp">

<LinearLayout
    android:id="@+id/vertical_outer_layout_id"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical"
    android:layout_marginTop="67dp"
    android:paddingBottom="100dp"
   >


    <TextView
        android:id="@+id/lyricView"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="67dp"
        android:background="#000000"
        android:gravity="center"
        android:maxLines="16"
        android:paddingBottom="5dp"
        android:paddingTop="8dp"            
        android:textColor="#ffffff"
        android:textStyle="bold"
        android:width="200dp" />

    <ProgressBar
        android:id="@+id/showLoading"
        style="?android:attr/progressBarStyle"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:layout_marginTop="-150dp"
        android:background="#000000" />
</LinearLayout>   
</ScrollView>

Upvotes: 1

MysticMagicϡ
MysticMagicϡ

Reputation: 28823

Try putting text view alone inside scrollview as:

<ScrollView
        android:id="@+id/content_scroll"
        android:layout_width="fill_parent"
        android:layout_height="250dp"
        android:layout_margin="7dip"
        android:scrollbars="none" >
    <TextView
        android:id="@+id/lyricView"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="67dp"
        android:background="#000000"
        android:gravity="center"
        android:maxLines="16"
        android:paddingBottom="5dp"
        android:paddingTop="8dp"            
        android:textColor="#ffffff"
        android:textStyle="bold"
        android:width="200dp" />
</ScrollView>

Upvotes: 2

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